Apparatus and method for manufacturing garnish for vehicle

Abstract

Disclosed are an apparatus and a method for manufacturing a garnish for a vehicle. The apparatus may include a movable member configured to form a cavity, a fixed member configured to include a machining part for foaming a thermo plastic olefin (PTO) at a time of being combined with the movable member and a resin supply hole penetrating through the machining part, and a resin supplier configured to supply a melting resin containing a chemical foaming agent to the resin supply hole.

What is claimed is: 
     
         1 . An apparatus for manufacturing a garnish for a vehicle, the apparatus comprising:
 a movable member configured to form a cavity;   a fixed member configured to include a machining part for foaming a thermo plastic olefin (PTO) at a time of being combined with the movable member and a resin supply hole penetrating through the machining part; and   a resin supplier configured to supply a melting resin containing a chemical foaming agent to the resin supply hole.   
     
     
         2 . The apparatus of  claim 1 , further comprising:
 a heating device configured to preheat the PTO foil at a predetermined temperature prior to fixing the PTO foil to the movable member to improve machinability of the PTO foil when the PTO foil is machined using the movable member and the fixed member.   
     
     
         3 . The apparatus of  claim 2 , wherein the movable member is provided with a winding machining block including a winding groove so that the PTO foil is wound in a state in which the movable member is combined with the fixed member, thereby winding an end of the melting resin when the PTO foil is machined while being bonded to the melting resin. 
     
     
         4 . The apparatus of  claim 3 , wherein the winding machining block is detachably mounted on the movable member via an ejector pin which is mounted in the movable member. 
     
     
         5 . The apparatus of  claim 3 , further comprising:
 a slider configured to be mounted at the fixed member via a spring to elastically support the movable member at the time of combining the movable member with the fixed member,   wherein a portion of the slider is provided to elastically support the winding machining block.   
     
     
         6 . The apparatus of  claim 3 , wherein the fixed member is provided with a hot blast supply passage supplying a hot blast to the PTO foil so that the PTO foil keeps in an adhering state with the winding groove of the winding machining block prior to supplying the melting resin in the state in which the movable member is combined with the fixed member. 
     
     
         7 . A method for manufacturing a garnish for a vehicle, comprising:
 preparing a molding to combine a movable member with a fixed member by moving the movable member, to which a PTO foil is fixed, forward;   supplying a hot blast to the PTO foil so that a portion of the PTO foil adheres to a winding groove of a winding machining block;   supplying a melting resin containing a chemical foaming agent to a rear surface of the PTO foil;   releasing the movable member from the fixed member by integrally bonding the PTO foil to the melting resin, moving the movable member backward from the fixed member and taking out a semi-finished garnish from the movable member; and   producing a finished garnish by cutting an unnecessary portion of the PTO foil, to which the melting resin is not bonded, from the semi-finished garnish.   
     
     
         8 . The method of  claim 7 , further comprising:
 preheating the PTO foil at a predetermined temperature prior to fixing the PTO foil to the movable member.   
     
     
         9 . The method of  claim 7 , wherein a valve pin is mounted in the resin supply hole and moves backward from an end of the resin supply hole at a controlled speed when the melting resin containing the chemical foaming agent is supplied to the rear surface of the PTO foil, thereby preventing a mark due to heat of the melting resin from occurring. 
     
     
         10 . The method of  claim 7 , wherein the movable member moves backward by a predetermined distance to secure a space depending on the chemical foaming of the melting resin after the melting resin containing the chemical foaming agent is supplied to the rear surface of the PTO foil. 
     
     
         11 . The method of  claim 10 , wherein when the movable member moves forward to be combined with the fixed member, when the movable member moves backward by a predetermined distance to secure the space depending on the chemical foaming of the melting resin, and when the movable member moves backward to be released from the fixed member, the winding machining block moves along with the movable member; and
 the winding machining block is separated from the movable member by an operation of the ejector pin to take out the semi-finished garnish from the movable member after the movable member is released from the fixed member.